SoW-2020-0003: Trace Hit Counters

[lttng-tools.git] / src / bin / lttng-sessiond / map.h

diff --git a/src/bin/lttng-sessiond/map.h b/src/bin/lttng-sessiond/map.h
new file mode 100644 (file)
index 0000000..1c84fe6
--- /dev/null
+++ b/src/bin/lttng-sessiond/map.h
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2020 Francis Deslauriers <francis.deslauriers@efficios.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0-only
+ *
+ */
+#ifndef _LTT_MAP_H
+#define _LTT_MAP_H
+
+#include <lttng/map/map.h>
+#include <common/kernel-ctl/kernel-ctl.h>
+#include "trace-kernel.h"
+#include "trace-ust.h"
+
+struct map_kv_ht_entry {
+       struct lttng_ht_node_str node;
+       char *key;
+       int64_t value;
+       bool has_overflowed;
+       bool has_underflowed;
+};
+
+enum lttng_error_code map_kernel_add(struct ltt_kernel_session *ksession,
+               struct lttng_map *map);
+enum lttng_error_code map_kernel_enable(struct ltt_kernel_session *ksession,
+               struct ltt_kernel_map *kmap);
+enum lttng_error_code map_kernel_disable(struct ltt_kernel_session *ksession,
+               struct ltt_kernel_map *kmap);
+
+int map_ust_add(struct ltt_ust_session *usession,
+               struct lttng_map *map);
+int map_ust_enable(struct ltt_ust_session *usess,
+               struct ltt_ust_map *umap);
+int map_ust_disable(struct ltt_ust_session *usess,
+               struct ltt_ust_map *umap);
+
+void map_add_or_increment_map_values(struct lttng_ht *map_values, const char *key,
+               int64_t value, bool has_underflowed, bool has_overflowed);
+
+int map_new_content_section(struct lttng_map_content *map_content,
+               enum lttng_map_key_value_pair_list_type list_type,
+               bool summed_all_cpus, unsigned int identifier,
+               int cpu, struct lttng_ht *values);
+
+#endif /* _LTT_MAP_H */